src/screen_browser.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2009 The Music Player Daemon Project
   3  * Project homepage: http://musicpd.org
   4
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "screen_browser.h"
  21 #include "i18n.h"
  22 #include "options.h"
  23 #include "charset.h"
  24 #include "strfsong.h"
  25 #include "screen_utils.h"
  26
  27 #include <string.h>
  28
  29 #define BUFSIZE 1024
  30
  31 #ifndef NCMPC_MINI
  32 #define HIGHLIGHT  (0x01)
  33 #endif
  34
  35 static const char playlist_format[] = "*%s*";
  36
  37 #ifndef NCMPC_MINI
  38
  39 /* clear the highlight flag for all items in the filelist */
  40 static void
  41 clear_highlights(mpdclient_filelist_t *fl)
  42 {
  43         guint i;
  44
  45         for (i = 0; i < filelist_length(fl); ++i) {
  46                 struct filelist_entry *entry = filelist_get(fl, i);
  47
  48                 entry->flags &= ~HIGHLIGHT;
  49         }
  50 }
  51
  52 /* change the highlight flag for a song */
  53 static void
  54 set_highlight(mpdclient_filelist_t *fl, mpd_Song *song, int highlight)
  55 {
  56         int i = filelist_find_song(fl, song);
  57         struct filelist_entry *entry;
  58
  59         if (i < 0)
  60                 return;
  61
  62         entry = filelist_get(fl, i);
  63         if (highlight)
  64                 entry->flags |= HIGHLIGHT;
  65         else
  66                 entry->flags &= ~HIGHLIGHT;
  67 }
  68
  69 /* sync highlight flags with playlist */
  70 void
  71 sync_highlights(mpdclient_t *c, mpdclient_filelist_t *fl)
  72 {
  73         guint i;
  74
  75         for (i = 0; i < filelist_length(fl); ++i) {
  76                 struct filelist_entry *entry = filelist_get(fl, i);
  77                 mpd_InfoEntity *entity = entry->entity;
  78
  79                 if ( entity && entity->type==MPD_INFO_ENTITY_TYPE_SONG ) {
  80                         mpd_Song *song = entity->info.song;
  81
  82                         if( playlist_get_index_from_file(c, song->file) >= 0 )
  83                                 entry->flags |= HIGHLIGHT;
  84                         else
  85                                 entry->flags &= ~HIGHLIGHT;
  86                 }
  87         }
  88 }
  89
  90 /* the playlist has been updated -> fix highlights */
  91 void
  92 browser_playlist_changed(struct screen_browser *browser, mpdclient_t *c,
  93                          int event, gpointer data)
  94 {
  95         if (browser->filelist == NULL)
  96                 return;
  97
  98         switch(event) {
  99         case PLAYLIST_EVENT_CLEAR:
 100                 clear_highlights(browser->filelist);
 101                 break;
 102         case PLAYLIST_EVENT_ADD:
 103                 set_highlight(browser->filelist, (mpd_Song *) data, 1);
 104                 break;
 105         case PLAYLIST_EVENT_DELETE:
 106                 set_highlight(browser->filelist, (mpd_Song *) data, 0);
 107                 break;
 108         case PLAYLIST_EVENT_MOVE:
 109                 break;
 110         default:
 111                 sync_highlights(c, browser->filelist);
 112                 break;
 113         }
 114 }
 115
 116 #endif
 117
 118 /* list_window callback */
 119 const char *
 120 browser_lw_callback(unsigned idx, bool *highlight, void *data)
 121 {
 122         static char buf[BUFSIZE];
 123         mpdclient_filelist_t *fl = (mpdclient_filelist_t *) data;
 124         filelist_entry_t *entry;
 125         mpd_InfoEntity *entity;
 126
 127         if (idx >= filelist_length(fl))
 128                 return NULL;
 129
 130         entry = filelist_get(fl, idx);
 131         assert(entry != NULL);
 132
 133         entity = entry->entity;
 134 #ifndef NCMPC_MINI
 135         *highlight = (entry->flags & HIGHLIGHT) != 0;
 136 #else
 137         *highlight = false;
 138 #endif
 139
 140         if( entity == NULL )
 141                 return "[..]";
 142
 143         if( entity->type==MPD_INFO_ENTITY_TYPE_DIRECTORY ) {
 144                 mpd_Directory *dir = entity->info.directory;
 145                 char *directory = utf8_to_locale(g_basename(dir->path));
 146
 147                 g_snprintf(buf, BUFSIZE, "[%s]", directory);
 148                 g_free(directory);
 149                 return buf;
 150         } else if( entity->type==MPD_INFO_ENTITY_TYPE_SONG ) {
 151                 mpd_Song *song = entity->info.song;
 152
 153                 strfsong(buf, BUFSIZE, options.list_format, song);
 154                 return buf;
 155         } else if( entity->type==MPD_INFO_ENTITY_TYPE_PLAYLISTFILE ) {
 156                 mpd_PlaylistFile *plf = entity->info.playlistFile;
 157                 char *filename = utf8_to_locale(g_basename(plf->path));
 158
 159                 g_snprintf(buf, BUFSIZE, playlist_format, filename);
 160                 g_free(filename);
 161                 return buf;
 162         }
 163
 164         return "Error: Unknown entry!";
 165 }
 166
 167 /* chdir */
 168 bool
 169 browser_change_directory(struct screen_browser *browser, mpdclient_t *c,
 170                          filelist_entry_t *entry, const char *new_path)
 171 {
 172         mpd_InfoEntity *entity = NULL;
 173         gchar *path = NULL;
 174         char *old_path;
 175         int idx;
 176
 177         if( entry!=NULL )
 178                 entity = entry->entity;
 179         else if( new_path==NULL )
 180                 return false;
 181
 182         if( entity==NULL ) {
 183                 if( entry || 0==strcmp(new_path, "..") ) {
 184                         /* return to parent */
 185                         char *parent = g_path_get_dirname(browser->filelist->path);
 186                         if( strcmp(parent, ".") == 0 )
 187                                 parent[0] = '\0';
 188                         path = g_strdup(parent);
 189                         g_free(parent);
 190                 } else {
 191                         /* entry==NULL, then new_path ("" is root) */
 192                         path = g_strdup(new_path);
 193                 }
 194         } else if( entity->type==MPD_INFO_ENTITY_TYPE_DIRECTORY) {
 195                 /* enter sub */
 196                 mpd_Directory *dir = entity->info.directory;
 197                 path = g_strdup(dir->path);
 198         } else
 199                 return false;
 200
 201         if (browser->filelist != NULL) {
 202                 old_path = g_strdup(browser->filelist->path);
 203                 filelist_free(browser->filelist);
 204         } else
 205                 old_path = NULL;
 206
 207         browser->filelist = mpdclient_filelist_get(c, path);
 208 #ifndef NCMPC_MINI
 209         sync_highlights(c, browser->filelist);
 210 #endif
 211
 212         idx = old_path != NULL
 213                 ? filelist_find_directory(browser->filelist, old_path)
 214                 : -1;
 215         g_free(old_path);
 216
 217         list_window_reset(browser->lw);
 218         if (idx >= 0) {
 219                 list_window_set_selected(browser->lw, idx);
 220                 list_window_center(browser->lw,
 221                                    filelist_length(browser->filelist), idx);
 222         }
 223
 224         g_free(path);
 225         return true;
 226 }
 227
 228 static bool
 229 load_playlist(mpdclient_t *c, filelist_entry_t *entry)
 230 {
 231         mpd_InfoEntity *entity = entry->entity;
 232         mpd_PlaylistFile *plf = entity->info.playlistFile;
 233         char *filename = utf8_to_locale(plf->path);
 234
 235         if (mpdclient_cmd_load_playlist(c, plf->path) == 0)
 236                 screen_status_printf(_("Loading playlist %s..."),
 237                                      g_basename(filename));
 238         g_free(filename);
 239         return true;
 240 }
 241
 242 static bool
 243 enqueue_and_play(mpdclient_t *c, filelist_entry_t *entry)
 244 {
 245         int idx;
 246         mpd_InfoEntity *entity = entry->entity;
 247         mpd_Song *song = entity->info.song;
 248
 249 #ifndef NCMPC_MINI
 250         if (!(entry->flags & HIGHLIGHT)) {
 251 #endif
 252                 if (mpdclient_cmd_add(c, song) == 0) {
 253                         char buf[BUFSIZE];
 254
 255 #ifndef NCMPC_MINI
 256                         entry->flags |= HIGHLIGHT;
 257 #endif
 258                         strfsong(buf, BUFSIZE, options.list_format, song);
 259                         screen_status_printf(_("Adding \'%s\' to playlist"), buf);
 260                         mpdclient_update(c); /* get song id */
 261                 } else
 262                         return false;
 263 #ifndef NCMPC_MINI
 264         }
 265 #endif
 266
 267         idx = playlist_get_index_from_file(c, song->file);
 268         mpdclient_cmd_play(c, idx);
 269         return true;
 270 }
 271
 272 static struct filelist_entry *
 273 browser_get_selected(const struct screen_browser *browser)
 274 {
 275         if (browser->filelist == NULL ||
 276             browser->lw->selected >= filelist_length(browser->filelist))
 277                 return NULL;
 278
 279         return filelist_get(browser->filelist, browser->lw->selected);
 280 }
 281
 282 static bool
 283 browser_handle_enter(struct screen_browser *browser, mpdclient_t *c)
 284 {
 285         struct filelist_entry *entry = browser_get_selected(browser);
 286         mpd_InfoEntity *entity;
 287
 288         if( entry==NULL )
 289                 return false;
 290
 291         entity = entry->entity;
 292         if (entity == NULL || entity->type == MPD_INFO_ENTITY_TYPE_DIRECTORY)
 293                 return browser_change_directory(browser, c, entry, NULL);
 294         else if (entity->type == MPD_INFO_ENTITY_TYPE_PLAYLISTFILE)
 295                 return load_playlist(c, entry);
 296         else if (entity->type == MPD_INFO_ENTITY_TYPE_SONG)
 297                 return enqueue_and_play(c, entry);
 298         return false;
 299 }
 300
 301 static bool
 302 browser_select_entry(mpdclient_t *c, filelist_entry_t *entry,
 303                      G_GNUC_UNUSED gboolean toggle)
 304 {
 305         assert(entry != NULL);
 306         assert(entry->entity != NULL);
 307
 308         if (entry->entity->type == MPD_INFO_ENTITY_TYPE_PLAYLISTFILE)
 309                 return load_playlist(c, entry);
 310
 311         if (entry->entity->type == MPD_INFO_ENTITY_TYPE_DIRECTORY) {
 312                 mpd_Directory *dir = entry->entity->info.directory;
 313
 314                 if (mpdclient_cmd_add_path(c, dir->path) == 0) {
 315                         char *tmp = utf8_to_locale(dir->path);
 316
 317                         screen_status_printf(_("Adding \'%s\' to playlist"), tmp);
 318                         g_free(tmp);
 319                 }
 320
 321                 return true;
 322         }
 323
 324         if (entry->entity->type != MPD_INFO_ENTITY_TYPE_SONG)
 325                 return false;
 326
 327         assert(entry->entity->info.song != NULL);
 328
 329 #ifndef NCMPC_MINI
 330         if (!toggle || (entry->flags & HIGHLIGHT) == 0)
 331 #endif
 332         {
 333                 mpd_Song *song = entry->entity->info.song;
 334
 335 #ifndef NCMPC_MINI
 336                 entry->flags |= HIGHLIGHT;
 337 #endif
 338
 339                 if (mpdclient_cmd_add(c, song) == 0) {
 340                         char buf[BUFSIZE];
 341
 342                         strfsong(buf, BUFSIZE, options.list_format, song);
 343                         screen_status_printf(_("Adding \'%s\' to playlist"), buf);
 344                 }
 345 #ifndef NCMPC_MINI
 346         } else {
 347                 /* remove song from playlist */
 348                 mpd_Song *song = entry->entity->info.song;
 349                 int idx;
 350
 351                 entry->flags &= ~HIGHLIGHT;
 352
 353                 while ((idx = playlist_get_index_from_file(c, song->file)) >=0)
 354                         mpdclient_cmd_delete(c, idx);
 355 #endif
 356         }
 357
 358         return true;
 359 }
 360
 361 static bool
 362 browser_handle_select(struct screen_browser *browser, mpdclient_t *c)
 363 {
 364         struct filelist_entry *entry = browser_get_selected(browser);
 365
 366         if (entry == NULL || entry->entity == NULL)
 367                 return false;
 368
 369         return browser_select_entry(c, entry, TRUE);
 370 }
 371
 372 static bool
 373 browser_handle_add(struct screen_browser *browser, mpdclient_t *c)
 374 {
 375         struct filelist_entry *entry = browser_get_selected(browser);
 376
 377         if (entry == NULL || entry->entity == NULL)
 378                 return false;
 379
 380         return browser_select_entry(c, entry, FALSE);
 381 }
 382
 383 static void
 384 browser_handle_select_all(struct screen_browser *browser, mpdclient_t *c)
 385 {
 386         guint i;
 387
 388         if (browser->filelist == NULL)
 389                 return;
 390
 391         for (i = 0; i < filelist_length(browser->filelist); ++i) {
 392                 struct filelist_entry *entry = filelist_get(browser->filelist, i);
 393
 394                 if (entry != NULL && entry->entity != NULL)
 395                         browser_select_entry(c, entry, FALSE);
 396         }
 397 }
 398
 399 #ifdef HAVE_GETMOUSE
 400 static int
 401 browser_handle_mouse_event(struct screen_browser *browser, mpdclient_t *c)
 402 {
 403         int row;
 404         unsigned prev_selected = browser->lw->selected;
 405         unsigned long bstate;
 406         int length;
 407
 408         if (browser->filelist)
 409                 length = filelist_length(browser->filelist);
 410         else
 411                 length = 0;
 412
 413         if (screen_get_mouse_event(c, &bstate, &row) ||
 414             list_window_mouse(browser->lw, length, bstate, row))
 415                 return 1;
 416
 417         browser->lw->selected = browser->lw->start + row;
 418         list_window_check_selected(browser->lw, length);
 419
 420         if( bstate & BUTTON1_CLICKED ) {
 421                 if (prev_selected == browser->lw->selected)
 422                         browser_handle_enter(browser, c);
 423         } else if (bstate & BUTTON3_CLICKED) {
 424                 if (prev_selected == browser->lw->selected)
 425                         browser_handle_select(browser, c);
 426         }
 427
 428         return 1;
 429 }
 430 #endif
 431
 432 bool
 433 browser_cmd(struct screen_browser *browser,
 434             struct mpdclient *c, command_t cmd)
 435 {
 436         struct filelist_entry *entry;
 437
 438         switch (cmd) {
 439         case CMD_PLAY:
 440                 browser_handle_enter(browser, c);
 441                 return true;
 442
 443         case CMD_SELECT:
 444                 if (browser_handle_select(browser, c))
 445                         /* continue and select next item... */
 446                         cmd = CMD_LIST_NEXT;
 447
 448                 /* call list_window_cmd to go to the next item */
 449                 break;
 450
 451         case CMD_ADD:
 452                 if (browser_handle_add(browser, c))
 453                         /* continue and select next item... */
 454                         cmd = CMD_LIST_NEXT;
 455
 456                 /* call list_window_cmd to go to the next item */
 457                 break;
 458
 459         case CMD_SELECT_ALL:
 460                 browser_handle_select_all(browser, c);
 461                 return true;
 462
 463         case CMD_LIST_FIND:
 464         case CMD_LIST_RFIND:
 465         case CMD_LIST_FIND_NEXT:
 466         case CMD_LIST_RFIND_NEXT:
 467                 screen_find(browser->lw, filelist_length(browser->filelist),
 468                             cmd, browser_lw_callback,
 469                             browser->filelist);
 470                 return true;
 471         case CMD_LIST_JUMP:
 472                 screen_jump(browser->lw, browser_lw_callback, browser->filelist);
 473                 return true;
 474
 475 #ifdef HAVE_GETMOUSE
 476         case CMD_MOUSE_EVENT:
 477                 browser_handle_mouse_event(browser, c);
 478                 return true;
 479 #endif
 480
 481 #ifdef ENABLE_SONG_SCREEN
 482         case CMD_SCREEN_SONG:
 483                 entry = browser_get_selected(browser);
 484                 if (entry == NULL || entry->entity == NULL ||
 485                     entry->entity->type != MPD_INFO_ENTITY_TYPE_SONG)
 486                         return false;
 487
 488                 screen_song_switch(c, entry->entity->info.song);
 489                 return true;
 490 #endif
 491
 492         case CMD_LOCATE:
 493                 entry = browser_get_selected(browser);
 494                 if (entry == NULL || entry->entity == NULL ||
 495                     entry->entity->type != MPD_INFO_ENTITY_TYPE_SONG)
 496                         return false;
 497
 498                 screen_file_goto_song(c, entry->entity->info.song);
 499                 return true;
 500
 501 #ifdef ENABLE_LYRICS_SCREEN
 502         case CMD_SCREEN_LYRICS:
 503                 entry = browser_get_selected(browser);
 504                 if (entry == NULL)
 505                         return false;
 506
 507                 if (entry->entity == NULL ||
 508                     entry->entity->type != MPD_INFO_ENTITY_TYPE_SONG)
 509                         return true;
 510
 511                 screen_lyrics_switch(c, entry->entity->info.song);
 512                 return true;
 513 #endif
 514
 515         default:
 516                 break;
 517         }
 518
 519         if (list_window_cmd(browser->lw, filelist_length(browser->filelist),
 520                             cmd))
 521                 return true;
 522
 523         return false;
 524 }